Question

8.02 x 10^20 atoms of copper to grams

Answer 1

Step-by-step explanation:

1

atom of

Cu

has a mass of

1.055

×

10

−

22

g

.

Step-by-step explanation:

1 atom Cu

⋅

1 mol Cu

6.022

×

10

23

atoms Cu

⋅

63.546 g Cu

1 mol Cu

=

1.055

×

10

−

22

g Cu

1 atom of copper must be converted in moles to express it as a quantity that can be converted into grams (our second step).

Avogadro's Number

(

1 mole

=

6.022

×

10

23

particles

)

and the relative atomic mass of copper

(

1 mole of copper = 63.546 g

)

are the equalities required to make